Question

(Java) write a program that searches a directory tree for a specific file

Answer 1

Java Code:

package main;

import java.io.*; //imports
import java.util.*;

public class Main { //main class

public static void main(String[] args) { //main function
  
   String directory, file;
   Scanner sc = new Scanner(System.in);
  
   System.out.println("Enter the directory"); //getting the directory from the user
   directory = sc.nextLine();
  
   System.out.println("Enter the file"); //getting the file
   file = sc.nextLine();
  
File folder = new File(directory); //creating a pointer to the folder
if(folder.canExecute() == false) { //checking if directory is valid
   System.out.println("Directory not Found");
   System.exit(0);
}
filesearch(file.toLowerCase(), folder); //searching for a file in folder and subfolder using recursion
  
System.out.println("File Not Found");

}

public static void filesearch(String file, File folder) {
for (File f : folder.listFiles()) { //for all files in folder

if (f.isDirectory()) { //if directory calling search recursively
   filesearch(file, f);
}

if (f.isFile()) { //if file
if (f.getName().toLowerCase().equals(file)) { //checking if name matches
System.out.println("File found in location: " + f.getAbsolutePath()); //then displaying the absolute path
System.exit(0);
}
}

}
}
  
}

Sample Output:

Enter the directory
E:\workspaces\Java\SearchFileInDirectory
Enter the file
main.java
File found in location: E:\workspaces\Java\SearchFileInDirectory\src\main\Main.java